Lysine Level Increases Live Performance and Breast Yield in Male Broilers

Kerr, B. J.; Kidd, M. T.; Halpin, K.; McWard, G. W.; Quarles, C. L.

doi:10.1093/japr/8.4.381

Cited by 54 publications

(42 citation statements)

References 21 publications

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“…Despite the results found in the present study for breast yield, many reports in the literature have demonstrated that increasing the digestible lysine level in the diet promotes increase in this variable (Kerr et al, 1999;Kidd et al, 2004;Rezaei et al, 2004;Mukhtar et al, 2007;Ghahri et al, 2010). Yet, the greater values obtained with the diet lacking supplementation of industrial amino acids in relation to the supplemented diet may be linked to the differences in the CP content of the tested diets (Viola et al, 2009b;Ghahri et al, 2010).…”

Section: Resultscontrasting

confidence: 91%

Digestible lysine levels obtained by two methods of formulation of diets for 22-to-42-day-old broilers

Oliveira

Donzele

et al. 2014

R. Bras. Zootec.

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-The objective of this study was to evaluate the effect of digestible lysine levels in diets with or without supplementation of industrial amino acids on performance, carcass characteristics and nitrogen excretion in broilers of 22 to 42 days of age. Birds were distributed in a completely randomized experimental design in a 4 × 2 factorial arrangement, with four digestible lysine levels (9.0, 10.0, 11.0 and 12.0 g/kg) and two methods to obtain the lysine levels (variation in the proportion of corn and soybean meal, without supplementation; or supplementation of industrial amino acids), eight replicates and 20 birds per replicate. There was an interaction effect on the performance characteristics and on the weights and yields of prime cuts. In both diets, feed conversion improved linearly as the lysine levels were increased. Feed intake; weight gain; carcass, thigh and drumstick weights; and boneless breast yield increased and abdominal fat reduced linearly as the lysine levels were increased in the unsupplemented diet. The lysine levels of the supplemented diets linearly reduced the yield of drumstick and quadratically reduced the yields of bone-in and boneless breast up to the estimated levels of 10.4 and 10.7 g/kg, respectively. Diets without supplementation increased the excretion and retention of nitrogen. The levels of 9.0 and 12.0 g/kg digestible lysine obtained with supplementation of industrial amino acids and without it, respectively, provide the best performance and yield of prime cuts in the birds. Diets in which the digestible lysine levels are obtained without supplementation provide better performance responses and carcass characteristics compared with supplemented diets.

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Section: Resultscontrasting

confidence: 91%

Digestible lysine levels obtained by two methods of formulation of diets for 22-to-42-day-old broilers

Oliveira

Donzele

et al. 2014

R. Bras. Zootec.

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“…

.87 by supplied our own product where as 287.

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mentioning

confidence: 80%

“…lysine level increases live performance and breast yield in male broiler. Morris et al (1987), Kidd et al (1998), Kerr et al (1999) and Garu (1984) also works on lysine which effect protein concentration on response to dietary lysine by chicks.…”

Section: IIImentioning

confidence: 99%

Effect Of Lysine On Growth Development Of Chicks By Supplying Food Prepared From Locally Available By Products.

Nargis¹

2013

IOSR-JAVS

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35%, 3.78%, 9.33%, 18.06% and 11% in our prepared feed, where 19%,6%,5%, 8% and 13% in market's food. The chicks gain weight after 90, 135 and 180 days were 3.43.89± 8.93, 557.44 ± 13.27 and 673.5 ± 9.87 by supplied our own product where as 287. 00 ± 16.00, 519.88 ± 15.43 and 631.16 ± 5.44 44, 244.44, 40.09 and 0.613 in chicks supplied by our own food whereas the parameters were 2. 16, 216.66, 53.96 and 0.969 in chicks supplied by the market's food respectively.

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“…The growth and development of breast muscle is more sensitive to nutrition than management factors. It has been well documented that dietary levels of lysine (Lys) (Hickling et al, 1990;Kidd et al, 1997;Kerr et al, 1999), methionine (Met) (Hickling et al, 1990;Kalinowski et al, 2003) and threonine (Thr) (Kidd et al, 1997 and2004) greatly influence the breast meat yield. Among muscle tissues, the breast muscle seems to be most sensitive to Lys deficiency in young chicks and this deficiency may increase the fractional rate of proteolysis in this muscle than in the liver (Tesseraud et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Growth responses of breast and leg muscles to essential amino acids in broiler chicks

Mehri

Kasmani

Rokouei

2016

Animal

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The first three essential amino acids (EAA) for broilers including methionine (Met), lysine (Lys) and threonine (Thr) may greatly influence the growth of chick muscles at early stages of life. In order to survey the potential effects of those EAA on growth muscles, a rotatable three-variable central composite design (CCD) was conducted to track the interrelationships of dietary digestible Met (dMet), Lys (dLys) and Thr (dThr) for optimization of processing yields in broiler chicks using response surface methodology. A total of 60 floor pens of six birds each were assigned to 15 dietary treatments based on CCD containing five levels of dMet (0.416% to 0.584% of diet), dLys (0.881% to 1.319% of diet) and dThr (0.532% to 0.868% of diet) from 3 to 16 days of age. Experimental treatments significantly affected breast mass (BM) and leg mass (LM) of the birds ( P < 0.05) in which the main effect of dLys on BM was threefold higher than the main effect of dThr, and interaction effect between dMet and dLys was observed on BM ( P < 0.05). However, in the case of LM, the main effect of dThr was higher than the main effects of dMet and dLys and highest interaction effect exist between dThr and dMet ( P < 0.05). The second-order models for BM and LM were fitted by least squares regression. Canonical analysis revealed that the stationary points for carcass components were saddle points, thus ridge analysis was performed for getting optimal values of each EAA. Ridge analyses of BM and LM models showed that the maximum BM point may be obtained with 0.58%, 1.05% and 0.76% of dMet, dLys and dThr, respectively, in diet, and maximum LM point may be achieved with 0.58%, 1.09% and 0.70% of dMet, dLys and dThr, respectively, in diet. The resultant ideal ratios of dMet and dThr to dLys were 55% and 72% for BM; 53% and 64% for LM. Moreover, sensitivity analysis showed that the most important amino acids in BM and LM models were Lys and Thr, respectively. In conclusion, providing these three amino acid for BM optimization may warrant LM optimization and higher ideal ratios of dMet and dThr for breast muscle may indicate the higher importance of these EAA in this muscle than those in thigh muscle.

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Lysine Level Increases Live Performance and Breast Yield in Male Broilers

Cited by 54 publications

References 21 publications

Digestible lysine levels obtained by two methods of formulation of diets for 22-to-42-day-old broilers

Digestible lysine levels obtained by two methods of formulation of diets for 22-to-42-day-old broilers

Effect Of Lysine On Growth Development Of Chicks By Supplying Food Prepared From Locally Available By Products.

Growth responses of breast and leg muscles to essential amino acids in broiler chicks

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